Repository Index

🍬A set of tools that keep Java sweet.

• java
• hutool
• http
• json

Chat2DB is a free, cross-platform, local-first database client and SQL workspace for developers, DBAs, analysts, and data teams. Connect to 40+ databases, manage data, edit and run SQL, and use your own AI model to generate, explain, and optimize queries. Available on desktop, web, Docker, and CLI, with MCP support.

• ai
• mysql
• oracle
• postgresql

QuestDB is a high performance, open-source, time-series database

• time-series
• low-latency
• database
• sql

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance for multi-dimensional analytics, real-time analytics, and ad-hoc queries. A Linux Foundation project.

• database
• olap
• sql
• analytics

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

• java
• hazelcast
• in-memory
• big-data

Apache Ignite

• distributed-sql-database
• iot
• osgi
• network-client

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance

• decentralized
• p2p
• p2p-network
• privacy

requery - modern SQL based query & persistence for Java / Kotlin / Android

• sql
• persistence
• java
• kotlin

The official MongoDB drivers for Java, Kotlin, and Scala

• java
• java-library
• jvm
• mongodb

Speedment is a Stream ORM Java Toolkit and Runtime

• java
• database
• stream
• orm

MongoDB object-document mapper in Java based on https://github.com/mongodb/mongo-java-driver

• java
• kotlin
• mongodb
• odm

Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.

• embedded-database
• java
• kotlin
• key-value

SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.

• xquery
• java
• temporal-data
• storage

Efficient execution and functional composition of database calls using jdbc and RxJava Observables

TranslatedUniversal, flexible, high-performance distributed ID generator.

• distributed
• id
• idgenerator
• snowflake

DAO oriented database mapping framework for Java

• java
• annotation-processor
• jdbc
• dao

A Relational Database Backed by Apache Kafka

⚗️ Lightweight HTTP extensions for Java & Kotlin

• jackson
• gson
• jaxb
• protobuf

HBase as a TinkerPop Graph Database

• graph-database
• hbase
• tinkerpop

Admin interface for MongoDB built using Django and Bootstrap. Features a JSON editor written in JavaScript that supports nested JSON objects.

Use the MongoDB query language to query your relational database, typically from frontend.

• spring-data-jpa
• spring-boot
• jpa
• hibernate

Spring data gremlin makes it easier to implement Graph based repositories. This module extends Spring Data to allow support for potentially any Graph database that implements the Tinkerpop Blueprints 2.x API.